I shouldn't have done it, but it was too much. I stood up, turned my back to him, and leant over the kitchen table. Ed's hands pushed my jeans and kni...kers down, then I felt the tip of his cock against my slit. I knew I shouldn't be doing this. But "fuck me," was what I said.There was no need for foreplay - this was urgent, desperate sex.I felt Ed slide into me, and I reached back to frig my clit. His hands grabbed my hips and he started thrusting hard and deep. I knew it wouldn't take either. It sounded foreign and beautiful at the same time. He made a vain attempt to ignore the supple thigh extending across his view.“Like this afternoon?” she teased. “Is that why you didn’t get up from your desk? So the poor, innocent coed wouldn’t see the professor’s big, bad hard on?”A brief tsunami of paranoia suddenly washed over Stone.“Look…uhh…about this afternoon…”“Shhh,” she hushed him, briefly looking away. “It happened because we let it. Right?”Only now did she look back at his. And from outside I pulled the door to be shut. I went to kitchen. Hardly some 15 minutes went, and I was cooking and with all my ears towards next room. And soon I heard a love-moan of my wife. I understood Dadu had already started love-teasing his beautiful grand-daughter!I stealthily walked towards that room, silently knelt down before its door that was shut and carefully fixed my eye on the key-hole the inside sight was vivid I saw both of them on the bed, totally clothless. My wife was. We met when I came by her office to check the company's books. I was an accountant for an independent firm. Helen was a sexy woman back then. She still looks pretty good today but like all of us we start showing our age.It was our third date when we finally had sex. We went out to dinner and ended up at her apartment where we teased each other for a while and then had sex. She didn't think twice about going down on me. I was standing there taking off my pants when she just dropped to her knees.